Cardiac arrest may hinder ability to learn certain tasks
...rons, the primary cells of the nervous system. The neurons that do survive a heart attack may undergo major s...a new spatial task than did healthy mice. "The neurons that survived a heart attack looked very different from normal, healthy neurons," DeVries said. "The...Wisconsin scientists develop quick botox test
...for mediating the release of chemical signals from neurons and that governs how messages are sent from brain to muscles. "The toxins are smart," Chapman notes. "They know where to go" inside cells to do the most damage. The newest work, says Chapman, helps give scientists an inside-the-cell view of the toxin...Brown research reveals key insight into memory-making
...anges occur in synapses. These connections between neurons the major site for information exchange in the br...ed with green fluorescent dye into the hippocampal neurons of rats, Kauer and her laboratory team found that AMPA receptors are indeed stored in recycling endo...Study explores gene transfer to modify underlying course of Alzheimer's disease
...erve growth factor into regions of the brain where neurons are degenerating, in order to prevent cell death a...liver NGF to the specific areas of the brain where neurons were degenerating in Alzheimer's disease. Indiscriminate delivery of NGF to the brain would cause si...Loss of the neuronal adhesion protein d-catenin leads to severe cognitive dysfunction
...synaptic connectivity and plasticity is reduced in neurons from d-catenin mutant animals, possibly offering a clue to the mechanisms by which deletions of d-catenin cause synaptic and cognitive dysfunction. Ultimately, this work may facilitate the understanding of the mental retardation observed in Cri-du-Ch...Popular Science announces Third Annual 'Brilliant 10'
...th the size of a grain of rice--he witnessed mouse neurons sprouting new branches in response to unfamiliar tasks, and saw new synapses appear. Svoboda's work contradicted the mainstream view that neural circuitry is fixed after childhood and may lead to methods of repairing the memory-formation system in Al...Cockroach-like robot leads new research effort
..."Yet, no single systems-level model, reaching from neurons to muscles to the skeleton to the whole body, can explain the control that makes movement possible. You have so many nerves and so many muscles, how in the world do you actually move forward?" Researchers from UC Berkeley, the University of Michi...News tips from the Journal of Neuroscience
...e biological clock depends on spontaneously firing neurons of the suprachiasmatic nucleus (SCN). Several ion ...ates, Jackson et al. recorded from dissociated SCN neurons in current clamp and then used the firing pattern of each cell as a voltage command. When the sodium...Molecule awakens and maintains neural connections
...receive neurotransmitter molecules. However, these neurons do have other receptors, called NMDA receptors, wh...ptor comes from an experiment in which Shi treated neurons with a molecule that mimicked Dasm1, but in which the portion of the molecule that extends into the ...News tips from the Journal of Neuroscience
...ut it only appears in mammalian axotomized central neurons when axons are within a permissive peripheral nerv...n and functional recovery. Without L1.1, brainstem neurons did not regenerate spinal axons or form functional synapses, and normal constant swimming behavior w...Extreme stretch-growth of axons
... of the Center for Brain Injury and Repair, placed neurons from rat dorsal root ganglia (clusters of nerves j...nt- filled plastic plates. Axons sprouted from the neurons on each plate and connected with neurons on the other plate. The plates were then slowly pulled apar...Small, Smac-like molecule encourages death of cancer cells
...g fetus, as well as for the elimination of surplus neurons during the development of the human brain. In healthy cells, Smac is sequestered within cell compartments called mitochondria, where the protein resides until mitochondria receive signals to release it. Smac then interacts with other molecules called...Essential smell gene may provide key to new insect repellents
...usual in two ways. First, nearly all the olfactory neurons in the fly have the Or83b receptor, whereas other ...special staining techniques, whether the olfactory neurons of the mutant flies had certain receptors and where these were located. In flies lacking Or83b recep...Convulsions in worms mimic epileptic seizures
... The team traced the mutation's effect on specific neurons in the simple nervous system of the 1-millimeter r...he number, placement, and organization of the GABA neurons in the mutant worms appeared normal, the team decided to look at the GABA neurons' ability to releas...Analysis of biological clock may lead to greater understanding of human disease
... When the sun rises it affects the light-sensitive neurons of the brain of the fruit fly, setting off reactions of proteins at a certain rate depending on the amount of light. The reactions set the clock. There are key proteins and two key feedback loops involved, making the system a hierarchical control sch...Mouse study shows NPAS3 and NPAS1 genes may be linked to psychosis
... brain cells called inhibitory interneurons. These neurons are smaller than the typical excitatory neurons, which pass electrical signals amongst themselves and act as the brain's wiring. The role of inhibitory interneurons, on the other hand, is to dampen the activity of excitatory neurons. The NPAS1 and ...New genetic research demonstrates possible cause of inherited form of Parkinson's disease
... the neurons. The study was conducted in dopamine neurons taken from mice. Dr. Sulzer likens the situation to a garbage truck stalling at the entrance to the town dump. "If the truck breaks down right in front of the dump, not only does it fail to deliver its own garbage to the dump, but it blocks all the...U of T study identifies possible stem cells in pancreas
...within the pancreas could make both beta cells and neurons is intriguing." U of T has a proud history of both diabetes and stem-cell research. Frederick Banting and Charles Best discovered insulin here in the 1920s, while years later, Drs. Ernest McCulloch and James Till first described the stem-cell concept......ells, acetylcholine triggers communication between neurons in the brain, and is involved directly or indirectly in many diseases, including Alzheimer's and diseases of peripheral nerves. Discovery of the acetylcholine transporter could lead to therapies for some of these diseases based on altering acetylchol......nter in the brain's hypothalamus with about 10,000 neurons that sits above the optic chasmthe location where the optic nerves cross each other. This master clock synchronizes independent clocks that reside in peripheral tissues, and every 24 hours, the master clock cycles. This cycling involves the coordin...